A supernova is the final stage of a life cycle of a star which end in a dramatic and massive explosion which is also an astronomical event before collapsing as a black hole or forming a neutron star.
In its maximum brightness, its total radiant energies may for the fleeting time outshines the entire output of a typical galaxy. Such drastic explosion discharge almost all its material away at about 30,000km/s. It plays a important role in enhancing interstellar medium with the heavier atomic mass chemical elements. The shock waves can trigger formation of new stars.(Credit:www.extremetech.com)